Alec Baldwin is a Bastard, Tyrant, Etc.

Alec Baldwin was a "total bastard" and "tyrant" on the set of The Girl's Guide to Hunting and Fishing, driving co-star Sarah Michelle Gellar and other crew members berserk with his rantings, says a source who worked on the upcoming movie.

"He was always pissed about the schedule of the film, and even once said he was doing it just for the money," said a movie insider. "He kept saying, 'This is the last movie I'll ever make' to everyone when he was stomping around the set."

Our source added that Gellar, whom the source credited as "professional and hard working," called Baldwin a nice guy strictly for the sake of PR.

"She hated that he was always telling the director what to do and calling the shots about everything, and that he was constantly on the phone with his lawyer screaming at the top of his lungs and cursing," the inside source dishes.

"If he raised his voice, it was over the custody of his daughter, Ireland, because [ex-wife Kim Basinger] has made him insane. She had put unbelievable pressure on him... She's a total [expletive] psychopath. And his daughter means everything to him."

Still, the actor's volcanic temper is legendary. Last April, actress Jan Maxwell quit the off-Broadway play "Entertaining Mr. Sloane," charging that Baldwin's behavior created an unhealthy and oppressive situation on stage and off.

Baldwin's tantrums, which included putting his fist through a wall because the air conditioning wasn't high enough, made her fear for her physical safety, mental health and artistic integrity, she said.